1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5a67b1af241b93a50a29d4055abcf6e9affc35005608137ce4435480571867. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/369996fe-f348-4093-9eb8-540e0d7b64bc.json and https://artists.proofprofile.net/proofs/artist/369996fe-f348-4093-9eb8-540e0d7b64bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9878bb56ccbe4f791793f2f666fbeca883cc4920ab6e857d9749cef9cb6c9793. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2044604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36428003b6e3bfb0dadb7553a1c963a7bff17ba5a41753e0d45b230ccd918066. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2059987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c855b21283f07ef541175cef8b9b02fc481bb1d2fc59519bfa0e1cf1529097. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2110024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1ba801977e8795d35240e455d4e57cf9b439a476ef8553c2e92dcf7e33f461. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2132839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1ba801977e8795d35240e455d4e57cf9b439a476ef8553c2e92dcf7e33f461. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2132839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4418d3d945a09ddc4c0667459fcabff933ff1be631a7a3c635dfc2679953c9bf. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T11:05:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2206818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ae03a103cc93d515331edb775a191f5b374a8492ab193a8bb7213540941b3a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6I32288212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715e4b0d598aa3939b561df0b62782acaec8e2d9c0eb7cf464eb877cb14bb01e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:06:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6SA2236247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7113749e37aed78bc6d3df9389d567c1ecf5caa33637deeea74b0a2c1e0040e1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XY2240340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7113749e37aed78bc6d3df9389d567c1ecf5caa33637deeea74b0a2c1e0040e1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XY2240340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3143244c978efd10fae96f8ace2475bec530998cd2fe3aa517556da7c250f2b6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE62M2228041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46712c4768a6a653130e709c44c5eb5ceebfca820ce0b580970cc567eaaac6e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE66N2212687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46712c4768a6a653130e709c44c5eb5ceebfca820ce0b580970cc567eaaac6e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE66N2212687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0dd620019b2a95e427c668f1d2fb749e71766689ecd0f6a7beb7595ab5fd5e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:37:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5BU2317064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ad1e8f5a6a940ce62c8a628a2c026bd1de8a5005f708875ddf9aaae4d516ab. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5BU2378783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bc0811fcdac44137c64fa4ef9fea76cfb56d8a35c8f60c28e94fdbd5ee7a64. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6HN2362916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48742b70e1a8342746e7958bc2a87785dabf8ac6f0740ed784d21e5f8614926. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XY2301155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48742b70e1a8342746e7958bc2a87785dabf8ac6f0740ed784d21e5f8614926. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XY2301155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692a14b47974bfe417f984a2d7b9e085c53a467e80211bba042a7533a1558848. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5BU2493801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692a14b47974bfe417f984a2d7b9e085c53a467e80211bba042a7533a1558848. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5BU2493801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6657aadaa8b722162bc25e312122c12c24ed949979bf30ac641bedba330d2116. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5752477353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c20120ace0414a8f025b02b5ddc6463def983ecb4077c627b00dbfec3702587. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92543080.